1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 A small-to medium-capacity dehumidifier (11-25 pints) for a living room can run around $100-$250 or more, depending on size and features such as a humidistat to set the desired humidity, auto-shut-off when the tank's full, energy efficiency and quiet operation.
For instance, Frigidaire offers 30 pint dehumidifiers, 50 pint dehumidifiers and 70 pint dehumidifiers. General Electric offers 30 pint, 40 pint, 50 pint and 65 pint dehumidifiers. You can also purchase a whole-house dehumidifier if you need to control moisture throughout the house instead of simply one room.